package com.yy.controller;


import com.yy.pojo.Result;
import com.yy.pojo.User;
import com.yy.service.UserService;
import com.yy.utils.JwtUtil;
import com.yy.utils.Md5Util;
import com.yy.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated  //校验注解
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username,@Pattern(regexp = "^\\S{5,16}$")String password) {
        //查询用户
        User u=userService.findByUserName(username);
        if(u==null){
            //注册
            userService.register(username,password);
            return Result.success();

        }else {
            return Result.error("用户名已占用");
        }
    }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$")String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        User u=userService.findByUserName(username);
        if(u==null) {
            return Result.error("用户名错误");
        }
         if(Md5Util.getMD5String(password).equals(u.getPassword())) {
             //登录成功
             //生成Jwt令牌
             HashMap<String, Object> claims = new HashMap<>();
             claims.put("id",u.getId() );
             claims.put("username",u.getUsername());
             String token = JwtUtil.genToken(claims);
             //把token存储到redis中
             ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
             operations.set("token",token,1, TimeUnit.HOURS);
             return Result.success(token);
         }
        return Result.error("密码错误");
    }

    @GetMapping("/userInfo")
    public Result<User> userInfo(@RequestHeader(name = "Authorization") String token){
//        Map<String, Object> map = JwtUtil.parseToken(token);
//        String username = (String)map.get("username");
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String)map.get("username");
        User user =userService.findByUserName(username);
        return Result.success(user);
    }

    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.updateUser(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader(name = "Authorization") String token){
        //参数校验
        String oldPwd = params.get("oldPassword");
        String newPwd = params.get("newPassword");
        String rePwd = params.get("rePassword");
        if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }
        //查询原密码  并和old_pwd对比
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String)map.get("username");
        User user = userService.findByUserName(username);
        if (!user.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码不正确");
        }
        if(newPwd.length() < 5 || newPwd.length() > 16) {
            return Result.error("新密码长度必须为5-16位");
        }
        if (!newPwd.equals(rePwd)) {
            return Result.error("两次输入密码不一样");
        }
        //更新密码
        userService.updatePwd(newPwd);
        //删除redis中对应的token
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete("token");
        return Result.success();
    }
}
